Yes, Johnny, I started the process seven years ago.
Here's my two cents:
1) Make certain your top 10 "stars" from each set are graded and accept the grade given by PSA/SGC if you're submitting now (don't resubmit over and over for a higher grade)
2)Test a few auction houses. I tested Heritage, Mile High, and PWCC before ending up with REA. Don't base your final decision on the PRICES you get. Auction houses can't determine price. Instead base that decision on CUSTOMER SERVICE
3) Enjoy the auction process when it goes live. It should be FUN to watch your set move up, especially in those final hours. I wrote a piece about this in particular on my website,
www.markearzoumanian.com. I titled it "Why am I Addicted..." and it can be found under the "Love of the Hobby" section.
Hope this helps. Peace and stay healthy.